If you go to Disney Online and check the amenities in the rooms this is what you will see.

Room features:

Most rooms are available with two double beds. A limited amount of rooms with king-size beds are also available
Disabled accessible rooms available
In-room pizza delivery
Nonsmoking rooms available
Irons, ironing boards, hair dryers and coffee pots in each room
Cribs available upon request
In-room refrigerators
In-room safes
Phones with voicemail and data ports
Disney Channel and ESPN
Laundry facilities/services

Sure looks to me like the rooms all have hair dryers!! Enjoy your visit with the Mouse.

This is a GREAT resort. We have a room in building 14 very near everything. Riverside has the best pool for kids of all the pools. Also get the meal plan. We did and think we save 100's of dollars. Prices are the same whether you have meal plan or not. My wife and I had supper on night without daughter and grandkids. Our bill was $117.00 meal plan paid for it.